What's the "newest" family member? All I see is a Shaft Drive Big Red in your avatar! EDIT - Oops.... getting late... I assume its a 185? See bolded part below...
Depending on the trike, look for either a concentric rear bearing carrier for the axle that will rotate and extend the distance between the sprockets.(350X, later 250R's) Another way to adjust is the swingarm bolt adjusts forward and back (81-82R, 200X). Seems like my 82-83 Big Red had 4 bolts you loosened that held the rear axle carrier, then you adjusted a bolt with 2 lock nuts that helped pivot the rear axle housing backwards. Try looking for any of these ways to adjust your chain..... or even better.... find yourself a owner's manual or a repair manual! Good luck man!
Bruce
'85 ATC350X - "Showgirl" '86 OEM plastics/Fork boots, Rear Axle/Rotor/Hubs, Hondaline Fender stabalizer/extender, Speedo/Tach, Tank cover.
'86 ATC350X - 'Go-Go Girl'
'82 ATC250R - 'California Girl' - Progressive springs F and R, Hondaline HL Guard, Fairing and Speedometer.
'82 ATC250R -'Snow Bunny' Ice Racer, Very Clean, Hondaline Fairing, custom FT tire, will put in the 300R motor
'70 US90 'Ol'Girl" - Aquarius Blue... all original seat and tires. Resto project in the future
'85 ATC250ES-'Workin' Girl' CMP Footguard, Hondaline Mudflaps, Speedo, HL Lens, Block Heater, Work Light, Foot Peg Covers and Cooler Rack
'85 ATC70 - All Original
'84 Yamaha 225DX - Durablue +3" axle, DR motor, New Plastics, Foot, Hand and HL Guards.
'85 Yamahauler - Gun Rack & 'Nerf Bars'
'85 Yamahauler - Nearly together and restored
'83 Suzuki ALT125 - Pieces
'89 Suzuki LT-4WD - Token Golf Cart