Jump to content


Photo

Solid Engine Mounts


  • Please log in to reply
11 replies to this topic

#1 VELOCUAZ

VELOCUAZ

    Stage One Kit Fitted

  • Noobies
  • PipPipPip
  • 73 posts

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

rww

    Mini Mad

  • TMF+ Member
  • PipPipPipPip
  • 144 posts
  • Location: Hastings, East Sussex.

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

keefr22

    Super Mini Mad

  • Members
  • PipPipPipPipPipPip
  • 591 posts

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

mini93

    He's just too casual!

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 8,615 posts
  • Location: Warwick
  • Local Club: Medievil minis of Warwickshire

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

rww

    Mini Mad

  • TMF+ Member
  • PipPipPipPip
  • 144 posts
  • Location: Hastings, East Sussex.

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

Tupers

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 4,105 posts
  • Location: Devon

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

fwdracer

    Mini Mad

  • Members
  • PipPipPipPip
  • 269 posts
  • Location: UK
  • Local Club: Mini7 Racing Club

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

unburntfuelinthemorning

    Camshaft & Stage Two Head

  • TMF+ Member
  • PipPipPipPipPipPipPipPip
  • 1,914 posts
  • Location: Bedfordshire

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

Stealth72

    Passed Test

  • Just Joined
  • PipPip
  • 25 posts
  • Location: Marshland St James, Norfolk

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

nicklouse

    Moved Into The Garage

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPipPip
  • 17,899 posts
  • Location: Not Yorkshire
  • Local Club: Anonyme Miniholiker

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

Stealth72

    Passed Test

  • Just Joined
  • PipPip
  • 25 posts
  • Location: Marshland St James, Norfolk

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

nicklouse

    Moved Into The Garage

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPipPip
  • 17,899 posts
  • Location: Not Yorkshire
  • Local Club: Anonyme Miniholiker

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.




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users