flak monkey
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| posted on 13/2/10 at 09:32 PM |
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Prop to gearbox enagagement
How much engagement should there be between the prop and gearbox?
Here's a pic of mine:
 
New prop 2
Which has around 70mm of engagement between the splines on the gearbox and the prop. But I could get another 20mm with a spacer....
What do we think? Enough or not?
Sera
http://www.motosera.com
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tomgregory2000
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| posted on 13/2/10 at 09:34 PM |
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Yes more in, i think mine is sticking out about 20mm
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RichardK
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| posted on 13/2/10 at 09:40 PM |
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Doesn't look that different from mine, maybe needs to go in a tad..
Dunning and Fairbank asked for the distance from the seal face to the diff flange and from that they made my prop, I'm sure they know what they
are doing.
Cheers
Rich
[Edited on 13/2/10 by RichardK]
Gallery updated 11/01/2011
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big_wasa
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| posted on 13/2/10 at 09:48 PM |
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Mine has got a touch more than I was expecting. Also made by D&F.
Didnt you already have a spacer in there ?
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flak monkey
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| posted on 13/2/10 at 09:57 PM |
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I did have a spacer with the original prop which I took out. Would have been too thick for this prop anyway (original prop was about 30mm too
short).
I made the original spacer to push the prop into the box with about 10mm clearance and could do the same on this one with a 15/20mm spacer.
Sera
http://www.motosera.com
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Angel Acevedo
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| posted on 13/2/10 at 10:07 PM |
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Flak,
You should aim for as much engagement as possible, leaving the "Scrub" distance you get from your trailing arms plus maybe 3-4 mm play so
whenever you are at full droop or full bump, the splined yoke doesn´t bottom on the transmission.
I hope this makes sense.
AA
Beware of what you wish.. for it may come true....
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flak monkey
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| posted on 14/2/10 at 09:20 AM |
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The diff is solid mounted and the engine wont move much, so I only need around 5mm of clearance to the prop joint.
I just didnt want to fit a spacer if the amount of engagement I have is ample anyway.
Cheers,
David
Sera
http://www.motosera.com
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blakep82
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| posted on 14/2/10 at 02:02 PM |
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bah, there was a thread on here ages ago, a guy who makes props started it for anyone to ask questions about props. i asked this very question. i
can't remember the answer. 70mm inside the box i think? about 25mm outside the box?
i'll see if i can find it
whats that grey plastic pipe you have? is that plumbing pipe? thinking of using some to run a braided hose inside in the tunnel
[Edited on 14/2/10 by blakep82]
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blakep82
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| posted on 14/2/10 at 02:37 PM |
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http://www.locostbuilders.co.uk/viewthread.php?tid=117027
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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flak monkey
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| posted on 14/2/10 at 05:49 PM |
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Cool, looks like it will be OK then, theres 70mm of engagement
The grey 'pipe' is actually the multicore cable that does all the electrics for the back of the car. It was a spare length of industrial
armoured stuff from work
Sera
http://www.motosera.com
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blakep82
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| posted on 14/2/10 at 06:15 PM |
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ah cool, it looks exaclty like the pipe the plumbers left behind when they finished the bathroom.
was just going to use it to run the fuel hose inside, so if it leaks it won't spray over the exhaust lol
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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