Author Topic: First Rally on the 3 1/2Hp  (Read 3965 times)

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Offline carcrank

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First Rally on the 3 1/2Hp
« on: 09 Nov 2014 at 04:36 »
After a bit of fettling the 3 1/2Hp was registered last week so I though the two day veteran rally this weekend would be a good test. Apart from a clutch adjustment all was going well although the front springs are little soft (or could it be my weight?) so it bottomed a couple of times over quite minor bumps.  But as I was about to take off on the second day an eagle eyed onlooker noticed a crack in the front forks, needless to say that was it for my day's riding.

I have been told that the forks are in fact 2 3/4Hp ones so is the oval tube still available, I remember some discussion about this some time ago or it might be my wishful imagination.

The club has springs but they may also be too soft as they are for a lighter bike, does anyone know what the difference is between the 3 1/2 and 2 3/4 forks?

Sad picture attached.
« Last Edit: 09 Nov 2014 at 05:53 by carcrank »

Offline graeme

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Re: First Rally on the 3 1/2Hp
« Reply #1 on: 09 Nov 2014 at 10:43 »
Hello Mark

The 3 1/2 forks are the same length, but wider and with larger tubes and beefier lugs. I've sent you a pm

Cheers,
Graeme

Offline Ian

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Re: First Rally on the 3 1/2Hp
« Reply #2 on: 10 Nov 2014 at 03:33 »
Mark, pity you didn't make the Douglas rally !!

Offline carcrank

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Re: First Rally on the 3 1/2Hp
« Reply #3 on: 10 Nov 2014 at 05:21 »
Sorry Ian,

Just could not organise myself in time.

From a bit internet research I need forks from a 3 1/2 or a 4 Hp that look like the picture attached, does anyone have a set? In the mean time I will fix the 2 3/4Hp ones.



Offline graeme

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Re: First Rally on the 3 1/2Hp
« Reply #4 on: 10 Nov 2014 at 06:37 »
Hi Mark

These forks pictured are for the 4hp machines of 1915 and 16. The 3 1/2hp forks look for all the world exactly the same as the 2 3/4hp of the same year, just wider and with slightly bigger tubes and lugs. I will get some pictures of mine and put them up for all to see.

Cheers,
Graeme

Offline carcrank

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Re: First Rally on the 3 1/2Hp
« Reply #5 on: 10 Nov 2014 at 07:23 »
Thanks Graeme,

Although 4Hp forks may do until the right ones turn up. :wink:

Offline Daren W Australia

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Re: First Rally on the 3 1/2Hp
« Reply #6 on: 06 Dec 2014 at 07:30 »
Just a pic of a 4hp I nicked of ebay Daren
too many dougli not enough time!

Offline carcrank

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Re: First Rally on the 3 1/2Hp
« Reply #7 on: 06 Dec 2014 at 09:08 »
Great Picture, I assume there is a sidecar hidden on the other side and the tank has an oil sight glass off something else as all the 4Hp I have seen have them on the top of the tank....maybe it's got a 3 1/2Hp tank and they have rigged up a sight glass off ????

Anyway those are the forks I want.

Cheers

Mark

 

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