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The 2-Stroke Garage => Turning Wrenches => Topic started by: pidjones on November 17, 2020, 01:34:02 PM

Title: A quick measurement, please
Post by: pidjones on November 17, 2020, 01:34:02 PM
Would one of you fine folks provide me with the measurement from the center of and RD400c (US version, if  it matters) seat hinge pin to the corner 90 degree bend? Either my Vietnamese seat has the wrong dimensions, or the seat hinges I ebayed are not right for the bike. The seat comes almost six inches from closing. That would require just a few mm adjustment, for which I plan to account by machining a couple small spacers to go between the hinge and seat pan.
Title: Re: A quick measurement, please
Post by: pidjones on November 17, 2020, 02:28:27 PM
Also, a question on assembly order. I almost have the electrical panel (with fuse box, rectifier, regulator) finished and ready to mount. But, should the airbox be mounted first? And, can both of these be mounted before the engine?
Title: Re: A quick measurement, please
Post by: RDFL on November 17, 2020, 03:03:23 PM
Do you have the hinge with the catch thing in back?
Title: Re: A quick measurement, please
Post by: pidjones on November 17, 2020, 04:28:38 PM
Quote from: RDFL on November 17, 2020, 03:03:23 PM
Do you have the hinge with the catch thing in back?
No. Just a simple hinge.
Title: Re: A quick measurement, please
Post by: RDFL on November 17, 2020, 04:34:41 PM
The one on left next to latch goes to rear, don't know if in front would do what your having or not but might. If they look like in pic you have right hinges, if tou still need measurements I can get them later. -- (https://i.imgur.com/CqefeDE.jpg)
Title: Re: A quick measurement, please
Post by: pidjones on November 17, 2020, 06:17:45 PM
Actually, they both look like the one on the right.
Title: Re: A quick measurement, please
Post by: pidjones on November 17, 2020, 06:49:23 PM
Woah! just looked again and I do have the hinge with the tab, and it is on the rear. So, I suspect the Vietnamese seat pan is not correct. I will just make up a few spacers real quick to raise the seat on that side. Shouldn't need to be more than 4 - 5 mm thick.
Title: Re: A quick measurement, please
Post by: pidjones on November 17, 2020, 10:09:24 PM
Added about 5mm to each hinge and almost 20 to the latch before it was level and would latch. This is with stock bumpers, most of which came off of the old seat.

It now latches, and is level right-left. I'll keep it wrapped in the cling-wrap for now.(https://uploads.tapatalk-cdn.com/20201118/17a4dd37e9151abc3ce922d8081b54e0.jpg)