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Solid Engine Mounts


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#1 VELOCUAZ

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Posted 27 August 2014 - 02:18 PM

Hello

 

Building a hill climb car and was thinking about fitting solid engine mounts, anybody tried them ?

 

Many Thanks

 



#2 rww

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Posted 29 August 2014 - 01:20 PM

Solid lower engine mounts are not parts used in a Miglia race car. Normal rubber ones are used but the engine is braced against any rocking movement (fore&aft) by four solid spherical jointed steady bars, one replacing the normal rubber mounted item above the clutch cover and another at the front of the engine from water pump to bulkhead.On the gearbox, one steady bar runs from the bottom of the clutch cover end to the subframe and another from the bottom of the speedo housing to the subframe. Welded brackets locate the rod end joints at engine & gearbox and on the top bulkhead. Purpose of all these steady bars is to allow solid mounting of the rod change gear lever assembly (in car) and removal of its top steady bar. Changing gear is then improved. If you require some pics, our  engine is out of the mini at the moment so there would be some clarity of what goes where.    


Edited by rww, 29 August 2014 - 01:24 PM.


#3 keefr22

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Posted 29 August 2014 - 01:25 PM

 Changing gear is then improved. If you require some pics, our  engine is out of the mini at the moment so there would be some clarity of what goes where.    

Apologies for butting in, but I wouldn't mind seeing some pics if you don't mind. Improving our gearchange is high on the priority list for next season....

 

keith



#4 mini93

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Posted 29 August 2014 - 01:37 PM

It would be neccesary to use solid mounts (as directed above) when using a solid mounted internal gearshifter. When the engine has been allowed to move about on rubber the tilt of the engine will be pulling on the selector shaft which can cause it to pop out of gear. solid mounting will lessen the allowable movement curing this problem.



#5 rww

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Posted 29 August 2014 - 01:48 PM

 

 Changing gear is then improved. If you require some pics, our  engine is out of the mini at the moment so there would be some clarity of what goes where.    

Apologies for butting in, but I wouldn't mind seeing some pics if you don't mind. Improving our gearchange is high on the priority list for next season....

 

keith

 

I'll take some pics and post them up later.



#6 Tupers

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Posted 29 August 2014 - 03:40 PM

I've got a twin top engine steadies on my estate as I'm running an internal gear linkage. I'll also be adding another two steadies at the front between the gearbox and subframe.    

IMG_6004_zpsfc0399fd.jpg

 

IMG_6233_zps7bbf5747.jpg



#7 fwdracer

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Posted 01 September 2014 - 11:26 AM

I know of Mini se7en racer that used solid engine mounts for one race. You can draw your own conclusion. The mentioned way of stopping the engine rocking on the crank axis via 2x upper and 2x lower is well documented and proven.



#8 unburntfuelinthemorning

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Posted 10 February 2020 - 08:21 PM

 

 

 Changing gear is then improved. If you require some pics, our  engine is out of the mini at the moment so there would be some clarity of what goes where.    

Apologies for butting in, but I wouldn't mind seeing some pics if you don't mind. Improving our gearchange is high on the priority list for next season....

 

keith

 

I'll take some pics and post them up later.

 

Did you take those pics?  I'd be interested to see them too.



#9 Stealth72

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Posted 11 February 2020 - 09:17 PM

I know of Mini se7en racer that used solid engine mounts for one race. You can draw your own conclusion. The mentioned way of stopping the engine rocking on the crank axis via 2x upper and 2x lower is well documented and proven.

Presumably using the three fore/aft rods prevents the engine from rocking, but the rubber lower (engine) mounts allow a small degree of vertical movement of the engine? This is essentially the same theory as a 4-bar live axle location, and that has worked well for years!

Are you using solid subframe mounts?

Edited by Stealth72, 11 February 2020 - 09:19 PM.


#10 nicklouse

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Posted 11 February 2020 - 09:36 PM

nope.

 

4 bar not really as they dont pick up in the right planes and the engine movement is more about the drive shafts.



#11 Stealth72

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Posted 12 February 2020 - 07:03 AM

nope.
 
4 bar not really as they dont pick up in the right planes and the engine movement is more about the drive shafts.


Thanks. I was assuming that the set-up as described was to allow a small amount of vertical compliance (because that is all that engine mounts would allow) and we all know that assumption is the mother of all f-ups!!!

#12 nicklouse

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Posted 12 February 2020 - 09:15 AM

If you look at old rubber mounts on a standard car they have moved in the for/aft direction.




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