speedo drive

[Wally]

Hi all I need help sourcing a speedo drive for my 5 speed conversion, It was done before my time and has never worked, When I finally got round to investigating it seems that there are bits missing down there, it has an orange drive with 20 teeth but its damaged at the other end and has no oil seals etc, Any help would be greatly appreciated.

 

[garethp6]

are you on about the speedo drive on the box if so they are the same as the p6 as when i looked at both of them they are the same

 

[Wally]

Hi and thanks for the reply, I've included a pic to try and find out exactly whats missing, I'm glad the boxes are all the same but I still need to source the part and Rimmers are out of stock, Cheers, Keith.

 

[Kman1600]

Hi,

I think you need the complete manual (cable) drive unit, what you have looks like the remains of the electric Speedo drive. I had to do the same thing when I converted to the 5 Speed, I e-mailed one of the LT77 gearbox re-conditioners that appears from time to time on e-bay and he helped me out, for a reasonable price. I then had to change the inner drive gear as it was broken and spinning on the shaft, not an easy job with the gearbox still on the car!!!

Unfortunately these bits seems to be getting hard to find and you just have to take what you can get, RobSport (the TR7 people) had some new bits a while back, might be a contact for S/H as well?

I ended up having to bore out the ID of an earlier inner drive gear (who said these boxes are all the same!!) and fit that (remaking the drive flats in araldite, see pic.) as that was all I could find at short notice.

Mine has black gears and the Speedo reads approx 60% of what it should, some day I'll sort that, for the events I do I use the Rev Counter for accurate speed calcs.

Hope that helps,

Tim

 

[garethp6]

well when i had my drive out on my some time last year and compare the LT77 to the p6 and there looked the same and to be honest i got mixed up and i think i got the p6 1 in mine and the speedo is still showin the same as it was well my speedo has allways been out about 25mph i think i got a few p6 drive gears some where if i can fine 1 i am willing to sell 1 to you

 

[Wally]

Thank for that info, And thank you Gareth that would be great, If you come across one I can be contacted on 07917344330 or kwall8448@aol.com many thanks again, Keith.

 

[garethp6]

you are on about the part with the speedo cable going in to

 

[Wally]

Yes thats the very fella, sits into the gearbox held in by a retaining clip, I take it theres some kind of oil seal too then cable connects to it, I have cables by the way, Thanks again, Keith.

 

[Kman1600]

Hi,

This bit I assume? Picture cut from the Dutch Sd1 site http://www.roversd1.nl/sd1web/index.html

edit: I should also have said the P6 Auto cable won't fit onto the Sd1 drive, if that's what you have? http://www.speedograph-richfield.com/ did mine, 55" long, SD1 at gearbox end and P6 @ the speedo head, £23.95 all in deliveried to my door, which I thought was pretty good.

Tim