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pre unit fork rebuild question??? #231309
01/05/09 2:48 pm
01/05/09 2:48 pm
Joined: Aug 2001
Posts: 794
Central Virginia
T120C Offline OP
BritBike Forum member
T120C  Offline OP
BritBike Forum member
Joined: Aug 2001
Posts: 794
Central Virginia
Hey all, so would it be a good upgrade to include the aluminum sleeves in my forks for my 59 650?? They did not show up until 1961 I think, but I am rebuilding everything and it seemed like a good upgrade (I am guessing there was a reason for Triumph to start using these!!!!) Any problems associated with this?? They seem to fit....


Jack
1967 MGB Roadster..
1959 Bonnie
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Re: pre unit fork rebuild question??? [Re: T120C] #231321
01/05/09 5:48 pm
01/05/09 5:48 pm
Joined: Oct 2003
Posts: 11,167
North Georgia, USA
RF Whatley Offline
BritBike Forum member
RF Whatley  Offline
BritBike Forum member
Joined: Oct 2003
Posts: 11,167
North Georgia, USA
Jack -

Good to hear from you, and happy new year, sir!

If you are talking of the same aluminum sliders I'm thinking of, then I don't think they will work. The forks on my pre-unit were hydraulically dampened using a central dampening unit that connected between the bottom of the fork leg and the fork cap nut. In later years, the hydraulic dampening was accomplished with fewer parts by squeezing the fork oil in and out of the void between the outside of the stantion tube and the inside of the fork leg.

The aluminum slider I think you're talking about is a shuttle valve that helps control that oil flow. This was later replaced about 1967 with a duplicate part in black plastic.

But the bottom line is that while the stantion tubes look alike, the dampening system is completely different. Therefore the aluminum sliders won't do a thing.

I hope I'm wrong for your sake. Updating the fork hydraulics by 5 years would improve the ride tremendously. Front forks were one of the areas where a lot of work was being done doing that time frame.

All the best! bigt


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes
Re: pre unit fork rebuild question??? [Re: T120C] #231323
01/05/09 5:50 pm
01/05/09 5:50 pm
Joined: Jun 2007
Posts: 5,695
Maui Hawaii
HawaiianTiger Offline

BritBike Forum member
HawaiianTiger  Offline

BritBike Forum member
Joined: Jun 2007
Posts: 5,695
Maui Hawaii
Seems to me that you should use all the parts for the duplex frame forks including the fork stanchions if you want to take advantage of the improved design. Dampening on the newer forks is achieve using the aluminum sleeve installed corrrectly and holes in the stanchion if I remember correctly. There is better rebound damping on the duplex forks as well as bump stop both on compression and full extension but the improvement is just marginal at best.
Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Flying Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
Re: pre unit fork rebuild question??? [Re: HawaiianTiger] #231331
01/05/09 6:24 pm
01/05/09 6:24 pm
Joined: Aug 2001
Posts: 794
Central Virginia
T120C Offline OP
BritBike Forum member
T120C  Offline OP
BritBike Forum member
Joined: Aug 2001
Posts: 794
Central Virginia
hey RF and Bill, I was hoping that both of you would be answering this question as I respect both your opinions... So this was a bike that was chopped a bit and lots of parts replaced... I don't have the internal that are shown on the 1959 bonnie parts manual.. and my CD does not have a parts manual for 60,61 or 62....for the 650... It does have the two part tube that goes from the fork caps to the shuttle cock at the end of the stanchions... It did not have the aluminum sleeve (probably forgotten by the last owner)... So not 100% sure what I got, I will post pics later this week, but would love to get both of your opinions before I go further...

Sideline RF, my friend was searching through my old mags and found an ad for Beno's father's shop in one fo the magazines... advertising indians for sale... Did not know that Beno's father was that big into them.... I will send you a scanned copy if you want....

Take care guys, happy new years...

Jack


Jack
1967 MGB Roadster..
1959 Bonnie
Re: pre unit fork rebuild question??? [Re: T120C] #231757
01/08/09 2:15 am
01/08/09 2:15 am
Joined: Nov 2008
Posts: 22
hamilton, va
pittss1s Offline
BritBike Forum member
pittss1s  Offline
BritBike Forum member
Joined: Nov 2008
Posts: 22
hamilton, va
Jack,
I'm almost sure that 59 has the same forks as my 57't110. A pressure tube assembly/top and bottom bushes with a restrictor valve and felt seals. I may have more than 1 fork assembly in some spares I have. Where in Va are you? I'm Leesburg/Hamilton area.

Cliff


57 T110
62 T120 project
77 T140 J
07 Bonneville
Re: pre unit fork rebuild question??? [Re: pittss1s] #231842
01/08/09 5:13 pm
01/08/09 5:13 pm
Joined: Aug 2001
Posts: 794
Central Virginia
T120C Offline OP
BritBike Forum member
T120C  Offline OP
BritBike Forum member
Joined: Aug 2001
Posts: 794
Central Virginia
Hey Cliff, I think I am going the "upgraded" way, I think.. Looking over all the books I have, I think I have the 60, 61, 62 internals with the 2 piece pressure tube and the need for aluminum sleeves...

I live in Charlottesville...

Jack


Jack
1967 MGB Roadster..
1959 Bonnie
Re: pre unit fork rebuild question??? [Re: T120C] #231855
01/08/09 6:27 pm
01/08/09 6:27 pm
Joined: Oct 2003
Posts: 11,167
North Georgia, USA
RF Whatley Offline
BritBike Forum member
RF Whatley  Offline
BritBike Forum member
Joined: Oct 2003
Posts: 11,167
North Georgia, USA
Originally Posted By: T120C

Sideline RF, my friend was searching through my old mags and found an ad for Beno's father's shop in one of the magazines... advertising Indians for sale. Did not know that Beno's father was that big into them. I will send you a scanned copy if you want....


Yep, in fact Beno has a picture posted in the shop of his dad sitting on a Chief, surrounded by his wife and family. On the fuel tank is purched a baby in diapers. The baby is Beno.

Albeno Rodiguero moved from Chicago to Atlanta in 1948 and set up an Indian shop. He had fallen in love with an Atlanta girl while in the Army. During the courtship, he was riding his Indian from Fort Benning in Columbus GA to Atlanta and back every weekend. (Imagine that trip in 1947 on 2-lane Georgia back roads at speed!) So he knew Georgia fairly well. He also knew that the long Italian name worked OK in Chicago, but not Atlanta, so it got shortened to Al Rodi.

When you got an Indian dealership in those days, you also got a Norton dealership, since it filled out the lower end of the line-up. Berliner models followed, so he picked up RE, Zundap, NSU, Vincent, BMW, Ariel, and eventually BSA. If it was a motorcycle, then Beno's dad sold it.

Yes, I'd appreciate a good scan. Contact me with a PM and I'll give you my email.

Maybe you saw the photo when you came to pick up your Atlas ??

Last edited by RF Whatley; 01/08/09 6:29 pm.

Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes

Moderated by  John Healy 


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