Another Dyna-Tech owner comes forward...

[dyna-ti]

It may be easier to use steel wool[using to back and forth like dental floss] to get in tight to the join ,than with wet 'n' dry

You have much work ahead

 

[carlton dyna-tech]

Hi, I can see why you say the area that gives you most concern is under the head-tube. I own a Dyna-Tech 2070 MTB and have been interested in these since they first came out and I can say that I never remember one being produced with a curved top tube before. Therefore, and with the damage to the head-tube, I think I would be right in suggesting that your frameset has had some heavy weight dropped on the top-tube at some point in its' life incurring this damage.

I'm not sure how you could get this repaired now-a-days as I don't know anyone who performs this bonding process any more.

Best-of-luck with your project.

 

[stuflyer]

Nah, that's definitely from the factory like that: the top tube was curved to give better clearance. One of RSP's adverts used to feature that very bike with the dropped tt.
And Sale Cycles in Chorlton had a few BITD.

 

[greenfinger]

that looks pretty cool

 

[carlton dyna-tech]

Hi again, I stand-corrected about the curved top-tube.

It's just that I have never seen one before like that. All the 2060 and later Titanium-tubed Dyna-Techs I have ever seen only seemed to have either a level top tube, or a sloping tob-tube. I even think the Metal-Matrix Composite Dyna-Tech of ex Team Raleigh rider Adrian Timmis only had a sloping top-tube. http://www.retrobike.co.uk/forum/viewtopic.php?t=43427

I would love to see more images of curved top-tube Dyna-Tech MTBs (and road frames?) as I imagine, like Dyna-Tech frames themselves, they are rare.

All-the-best

 

[stuflyer]

Yes they weren't particularly comon in real life - Sale Cycles were the bike equivalent of those book shops that sell remaindered books - I have a feeling that the dropped top tube bikes didn't sell well. They were the biggest ones in the DynaTech range ISTR.

 

[Cagey]

Nah, that's definitely from the factory like that: the top tube was curved to give better clearance. One of RSP's adverts used to feature that very bike with the dropped tt.
And Sale Cycles in Chorlton had a few BITD.

I think it may have been Sale cycles that my bike came from - we definitely drove up to Chorlton-cum-Hardy to get it.

No progress on anything at the moment, as real work has got in the way, and last weekend was taken up with shopping/family duties. Wedding to attend next week and away the weekend after that. Gonna be a slow burner this one...

Still, it's sat untouched for x years, so a little while longer won't hurt.

 

[stuflyer]

Ah! could also have been foster's just down the road. there was only about 200 yards between them. They were a Releigh only dealer then, and had the first DT that I saw. I immediately went back to work - Halfords in White City and ordered one with my staff discount
Oddly Halfords also owned Sale Cycles, but they only had 19s and upwards in so I had to order it straight from the factory rather than just transfering one over.

 

[Dynatech]

It's just that I have never seen one before like that. All the 2060 and later Titanium-tubed Dyna-Techs I have ever seen only seemed to have either a level top tube, or a sloping tob-tube. I even think the Metal-Matrix Composite Dyna-Tech of ex Team Raleigh rider Adrian Timmis only had a sloping top-tube. http://www.retrobike.co.uk/forum/viewtopic.php?t=43427

I've got a 2070 frameset (in a sort of raspberry pinky colour :shock: ) with the Dyna-Curve kinked top tube. I'm guessing the Encounter pictured is a 1990 model as my Encounter has the same graphics; 1991 models have outlined DYNA-TECH graphics on the down tube and model on the top tube. Mine is a large frame (49cm?), but is flat top-tube. Maybe the one pictured is a 53cm frame? The 1991 Dyna-Tech brochure only lists two top-end models, with large frames, having Dyna-Curve geometry. I remember seeing one new at the Chester Raleigh dealer Claude Crimes in 1991/92. I'm pretty sure only the steel 20xx series had Dyna-Curve geometry offered.

 

[bikemeister2000]

The Dyna-curve geometry was a simple solution to reducing stand-over height on the large frame size. Nothing more in it than that.