Bar Grip vs "MT" or "AT"

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On or around Mon, 06 Feb 2006 17:06:09 +0000, Tom Woods
<[email protected]> enlightened us thusly:

[285/75R16]
>>
>>What do you reckon ?
>
>Hmm. They sound like they would fit.. Only one way to find out ;)
>
>Remember that they will be over 11" wide too which may make the
>steering even heavier!

They'd be a lot wider, and might be too wide for the rims, in theory.
>
>Can anybody tell me what i need to put in and i can draw it up in a
>spreadsheet or something.

All you really need is tyre diameter. The effect on gear ratios is down to
the different circumference, which is proportional to diameter. If you're
talking 34" nominal tyres originally, and fitting 32.5 nominal, (I make it
32.8)

erm... just wondering which percentage you want. I *think* you want
(difference)/(new tyre size)*(gear ratio). I doubt it makes that much
difference which tyre size you use for the ratio.

--
Austin Shackles. www.ddol-las.net my opinions are just that
"Remember that to change your mind and follow him who sets you right
is to be none the less free than you were before."
Marcus Aurelius Antoninus (121-180), from Meditations, VIII.16
 
Steve Taylor <[email protected]> uttered summat worrerz
funny about:

> Rich Clafton did it didn't he ?
>
> Steve

Is it the one on Martyns site bunged together by Tim?

Lee


 
On Mon, 06 Feb 2006 17:06:09 +0000, Tom Woods
<[email protected]> wrote:

>Remember that they will be over 11" wide too which may make the
>steering even heavier!

Mine are 14.5 inch wide - mind, I had all the offset put on the
outside of the new rims when they were made.

>diameter would be more like 32.5" by my reckoning. I've no idea what
>loosing another half inch would do to things

Makes it sillysad to drive and looks a bit naff too IMO.


--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
On Mon, 06 Feb 2006 17:19:57 +0000, Steve Taylor
<[email protected]> wrote:

>Rich Clafton did it didn't he ?

Rich hated them. See:

http://www.101fc.net/offroad-2002-01-13/2002-01-13-003.jpg



--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
Mother wrote:
> On Mon, 06 Feb 2006 17:19:57 +0000, Steve Taylor
> <[email protected]> wrote:
>
>> Rich Clafton did it didn't he ?
>
> Rich hated them. See:
>
> http://www.101fc.net/offroad-2002-01-13/2002-01-13-003.jpg


Did what ? The reference was to a tyre size spreadsheet I thought Rich
had done. I might be thinking of his gear ratio document though....

If the subject of the message HAS changed, what tyres were those in the
picture ?

Steve
 
On Fri, 10 Feb 2006 18:11:17 +0000, Steve Taylor
<[email protected]> wrote:

>> Rich hated them. See:
>>
>> http://www.101fc.net/offroad-2002-01-13/2002-01-13-003.jpg
>
>
>Did what ?

Did have smaller tyres.

>The reference was to a tyre size spreadsheet I thought Rich
>had done. I might be thinking of his gear ratio document though....

It wasn't his...

http://www.101fc.net/files/gearratios.xls


--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
On Fri, 10 Feb 2006 19:14:49 +0000, Mother <"@ {mother} @"@101fc.net>
wrote:

>On Fri, 10 Feb 2006 18:11:17 +0000, Steve Taylor
><[email protected]> wrote:
>
>>> Rich hated them. See:
>>>
>>> http://www.101fc.net/offroad-2002-01-13/2002-01-13-003.jpg
>>
>>
>>Did what ?
>
>Did have smaller tyres.
>
>>The reference was to a tyre size spreadsheet I thought Rich
>>had done. I might be thinking of his gear ratio document though....
>
>It wasn't his...
>
>http://www.101fc.net/files/gearratios.xls

Its amazing the information you can gain from that. For example, a 101
with rangrover ratio diffs will achieve 130mph at 3500rpm in top......

Alex
 
On Fri, 10 Feb 2006 20:26:08 +0000, Alex <[email protected]>
wrote:

>>http://www.101fc.net/files/gearratios.xls
>
>Its amazing the information you can gain from that. For example, a 101
>with rangrover ratio diffs will achieve 130mph at 3500rpm in top......

I have standard diffs in Grumble and a clocked* top speed of 89.4mph

I wanted to try the 'ton' but my bottle went - as did the bottle of my
professional colleagues who were (by prior arrangement) clocking me...

"Stopping" was the issue... :-(




*(by a calibrated device in an, erm, 'official' vehicle, which,
incidentally, exactly matched the speed given by my fishfinder GPS)...


--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
On or around Fri, 10 Feb 2006 20:26:08 +0000, Alex
<[email protected]> enlightened us thusly:

>On Fri, 10 Feb 2006 19:14:49 +0000, Mother <"@ {mother} @"@101fc.net>
>wrote:
>
>>On Fri, 10 Feb 2006 18:11:17 +0000, Steve Taylor
>><[email protected]> wrote:
>>
>>>> Rich hated them. See:
>>>>
>>>> http://www.101fc.net/offroad-2002-01-13/2002-01-13-003.jpg
>>>
>>>
>>>Did what ?
>>
>>Did have smaller tyres.
>>
>>>The reference was to a tyre size spreadsheet I thought Rich
>>>had done. I might be thinking of his gear ratio document though....
>>
>>It wasn't his...
>>
>>http://www.101fc.net/files/gearratios.xls
>
>Its amazing the information you can gain from that. For example, a 101
>with rangrover ratio diffs will achieve 130mph at 3500rpm in top......

Cool. Now if Martyn could only get his arse in gear to fit the 5.2 engine
to the GS, we could see a racing 101 yet.

--
Austin Shackles. www.ddol-las.net my opinions are just that
Soon shall thy arm, unconquered steam! afar Drag the slow barge, or
drive the rapid car; Or on wide-waving wings expanded bear the
flying chariot through the field of air.- Erasmus Darwin (1731-1802)
 
On Sat, 11 Feb 2006 09:41:53 +0000, Austin Shackles
<[email protected]> wrote:

>On or around Fri, 10 Feb 2006 20:26:08 +0000, Alex
><[email protected]> enlightened us thusly:
>
>>On Fri, 10 Feb 2006 19:14:49 +0000, Mother <"@ {mother} @"@101fc.net>
>>wrote:
>>
>>>On Fri, 10 Feb 2006 18:11:17 +0000, Steve Taylor
>>><[email protected]> wrote:
>>>
>>>>> Rich hated them. See:
>>>>>
>>>>> http://www.101fc.net/offroad-2002-01-13/2002-01-13-003.jpg
>>>>
>>>>
>>>>Did what ?
>>>
>>>Did have smaller tyres.
>>>
>>>>The reference was to a tyre size spreadsheet I thought Rich
>>>>had done. I might be thinking of his gear ratio document though....
>>>
>>>It wasn't his...
>>>
>>>http://www.101fc.net/files/gearratios.xls
>>
>>Its amazing the information you can gain from that. For example, a 101
>>with rangrover ratio diffs will achieve 130mph at 3500rpm in top......
>
>Cool. Now if Martyn could only get his arse in gear to fit the 5.2 engine
>to the GS, we could see a racing 101 yet.

I think at that speed, to stand any chance of pulling up in time he
would need to purchase another 101 Disc brake kit and fit a second
caliper to each wheel.....

Alex
 
On Sat, 11 Feb 2006 18:13:53 +0000, Alex <[email protected]>
wrote:

>>Cool. Now if Martyn could only get his arse in gear to fit the 5.2 engine
>>to the GS, we could see a racing 101 yet.
>
>I think at that speed, to stand any chance of pulling up in time he
>would need to purchase another 101 Disc brake kit and fit a second
>caliper to each wheel.....

Given it's a TVR engine, I reckon I need to follow up the lead on
getting TVR ceramic brakes adapted to fit a 101.

I _will_ hit the 101mph target at some point...


--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
On Sat, 11 Feb 2006 09:41:53 +0000, Austin Shackles
<[email protected]> wrote:

>Cool. Now if Martyn could only get his arse in gear to fit the 5.2 engine
>to the GS, we could see a racing 101 yet.

I've only just finished rebuilding the 3.5 in the GS, which has bits
from Grumble, Steve Taylors ambi V8 and a custom 'blood' manifold seal
on the LH inlet... ;-)


--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
On Sat, 11 Feb 2006 19:06:43 +0000, Mother <"@ {mother} @"@101fc.net>
wrote:

>On Sat, 11 Feb 2006 18:13:53 +0000, Alex <[email protected]>
>wrote:
>
>>>Cool. Now if Martyn could only get his arse in gear to fit the 5.2 engine
>>>to the GS, we could see a racing 101 yet.
>>
>>I think at that speed, to stand any chance of pulling up in time he
>>would need to purchase another 101 Disc brake kit and fit a second
>>caliper to each wheel.....
>
>Given it's a TVR engine, I reckon I need to follow up the lead on
>getting TVR ceramic brakes adapted to fit a 101.
>
>I _will_ hit the 101mph target at some point...

Looking at the Zeus kit, i see no reason why the caliper bracket
couldn't be remanufactured to provide mounting sites for 2 calipers on
one side of the wheel, it looks like there's enough space to fit them
within the confines of the swivel pin mounts. The only problem will be
pursuading the discs not to overheat incredibly quickly, as they're
not vented, and from what i can see are completely custom to the 101,
so you can't pop down halfords and order a vented pair instead.

BTW, what do you do when you need new discs?

Alex
 
On Sat, 11 Feb 2006 23:03:03 +0000, Alex <[email protected]>
wrote:

>Looking at the Zeus kit, i see no reason why the caliper bracket
>couldn't be remanufactured to provide mounting sites for 2 calipers on
>one side of the wheel, it looks like there's enough space to fit them
>within the confines of the swivel pin mounts. The only problem will be
>pursuading the discs not to overheat incredibly quickly, as they're
>not vented, and from what i can see are completely custom to the 101,
>so you can't pop down halfords and order a vented pair instead.

But they are flawed. I've had several reports of fractures (visible
cracks no less) in the disc, see:

http://www.101fc.net/lro-malvern-2005/lro-malvern-2005-020.jpg

Also two reports of the caliper not, erm, fitting and needing
modification. I think I'd be happier (if the insurance company agree)
to go with the TVR.

>BTW, what do you do when you need new discs?

Yer feckin fecked?


--
"We have gone from a world of concentrated knowledge and wisdom to one
of distributed ignorance. And we know and understand less while being
increasingly capable." Prof. Peter Cochrane, formerly of BT Labs
In memory of Brian {Hamilton Kelly} who logged off 15th September 2005
 
On Sat, 11 Feb 2006 23:10:03 +0000, Mother <"@ {mother} @"@101fc.net>
wrote:

>On Sat, 11 Feb 2006 23:03:03 +0000, Alex <[email protected]>
>wrote:
>
>>Looking at the Zeus kit, i see no reason why the caliper bracket
>>couldn't be remanufactured to provide mounting sites for 2 calipers on
>>one side of the wheel, it looks like there's enough space to fit them
>>within the confines of the swivel pin mounts. The only problem will be
>>pursuading the discs not to overheat incredibly quickly, as they're
>>not vented, and from what i can see are completely custom to the 101,
>>so you can't pop down halfords and order a vented pair instead.
>
>But they are flawed. I've had several reports of fractures (visible
>cracks no less) in the disc, see:
>
>http://www.101fc.net/lro-malvern-2005/lro-malvern-2005-020.jpg
>

Looks like overheating to me. It'd be interesting to find out what
temperatures the disc is getting up to in normal use. Has anybody
tried to get them up to fade temperature, and how quickly? Looking at
the shape of the discs, i can see several problems with stress
fracture points due to expansion. Couple that with the size of those
pads...... There's an awfull lot less lining area there than with a
set of shoes. Perhaps a simple upgrade to bigger pistons in the
standard drum brakes would be a better way to achieve more braking
effort?

ALex
 
On or around Sat, 11 Feb 2006 19:06:43 +0000, Mother <"@ {mother}
@"@101fc.net> enlightened us thusly:

>On Sat, 11 Feb 2006 18:13:53 +0000, Alex <[email protected]>
>wrote:
>
>>>Cool. Now if Martyn could only get his arse in gear to fit the 5.2 engine
>>>to the GS, we could see a racing 101 yet.
>>
>>I think at that speed, to stand any chance of pulling up in time he
>>would need to purchase another 101 Disc brake kit and fit a second
>>caliper to each wheel.....
>
>Given it's a TVR engine, I reckon I need to follow up the lead on
>getting TVR ceramic brakes adapted to fit a 101.
>
>I _will_ hit the 101mph target at some point...

Some of the rally cars have double-calipers on monster-size front discs. If
you fit 20" wheels, you should be able to fit, oh, about 15" at least discs.
Actually, given the money to throw at it, it should be easily possible.
--
Austin Shackles. www.ddol-las.net my opinions are just that
"Would to God that we might spend a single day really well!"
Thomas À Kempis (1380 - 1471) Imitation of Christ, I.xxiii.
 
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