Part #83-1798
Late 60's Triumph Bonnie Gas Tank
Part number
83-1798 raw steel fuel tank is as supplied on the late 1960s Bonnies, but will
fit all unit construction pre1971 Triumph 650 models. The Taiwan manufacturers
are using thicker gauge steel than original for strength and to meet DOT
regulations for fuel tanks. These tanks are a virtually exact replica for the
impossible to find tank that is missing from so many bikes. These will take the
standard badges, kneegrips, fuel taps and caps, all stocked by BCS
and available through any BCS dealer, or the badge holes can be filled in and
painted over or decals can be fitted. If you are restoring or are building a
bobber don't miss out! Order today.
Superseded numbers: 82-6728, 82-9207
Notes:
1) The tank under this part # was
originally painted; originally for 1970 T120R.
2) Uses the stock
Triumph gas cap 622-04 or
alternate.
3) Note: Original tank used early beading strip 83-5564 (that
has integral stud) with nut 97-0919 and washer 82-4019; or later strip 83-0031
with hook 83-0008 and nut 97-0919 and washer 82-4019.
These do not
fit this tank- too short! We are researching this issue and will post results
here.
4) Can use late
kneepads 82-8192/8193 (1968 onward) or early 82-5401/5402
(pre 1968).
5)
82-9700/9701 badge set with two
each screws 82-7888 and 83-1339; but early
82-6887/6888 (1965-1968) badge set
with two each 82-4129 and 82-7888 screws will align, but the curvature is not
correct - this may be a problem with the current batch of badges and not the
tank.
6) Uses
gas taps 621-131 and 621-132 with
sealing washers 70-7351 and 83-0002.
7) Uses
tank mount hardware and rubber kit 414-000091
back to 1967; pre 1967 uses the same kit plus rear frame bolt 82-5337.
8) It is highly recommended that all fuel tanks
be fitted, pressure tested, and sealed before painting.
We recommend
235-02 Gas Tank Sealer:
Two part epoxy, no solvents, so ground shippable mail and UPS. Customers clean
tank using thinner and screws, not included. Guaranteed with alcohol and
fibreglass.
WARNING: When installing these fuel tanks ALL frame, motor, carburetor,
cable and bracket clearances must be checked with the fuel tank full to insure
there are sufficient clearances when the motor is cold and hot. All hardware
must be properly installed and tightened accordingly. Please pressure test gas
tanks prior to painting. All parts
must be fitted prior to painting the tank to be sure that no problems are
encountered later.
Please note, although we only sell parts from reliable manufacturers, warranties
are limited only to replacement of defective parts, and no labour of any type,
including paint jobs or return shipping, is ever covered.
Further Notes February 2009: These have
been made as close to the original as possible, and the tank badge fitment issue
mentioned was a slight gap with some of the reproduction badges necessitating
some fine "fitting" to eliminate any gap where they meet. I think it is as much
an issue with the badges as with the tanks, and suspect original badges may fit
a hair better. Due to a thicker gauge steel used in manufacture of these tanks
to ensure they meet current specs, making them more bulletproof than the
originals, the beading is a tighter fit, so should be trial fitted before
painting and may sit a hair higher. The only other issue noted was that the
tanks sit a hair higher in the front. While this is not a problem with rubber
mounted bars, it might mean that tank mounting rubbers on a bike with solid
handlebar mounts on the top crown should be shortened to prevent any possible
interference between tank top and bars. While I guess for a 100 Point concours
resto an original tank should be used, I have a hard time telling the
difference, and think these would pass any but the most expert judge's glance.
By the way, we do have genuine factory caps, current made chrome strips, and
hope to have a few dozen pairs of original factory badges and another few
hundred UK made taps here the end of the month, if you can use any other bits.
All mounting components are in stock, too.
Unless someone else tools up for new tank, these are the only ones made for these bikes since 1970, to my knowledge, and I would have no qualms about using them on my own road bikes, though I would always pressure test any tank before painting as a matter of course.
We have sold twenty-two so far from this batch
and only had compliments.
Coincidentally enough, I just got word from our tank supplier that badges and
screws that fit the tank well are on way to us and should be in soon. Tank
strips that fit well without any "fitting" required are also on order.
Mark Appleton, Owner/Partsman, BCS - February, 2009