Sachs Roadster 800 porn

(Never stared at my own bike for so long)

She's a real good looking bike

That's a nice bike. My mate's wife has a Sachs based chop.

Proper nice that bud

Love the bike aprt from the way they have designed the seat to fall so low by the suspension. Apart from that it is lovely

Nice looking machine

I must be on a different planet what the hell is a Sachs Roadster 800 is that the new intruder:lol!:

Nice bike mate! Why is it that everone's bike looks cleaner than mine

Cheers,
Took her for a spin today & getting use to the agile cruiser style of riding. I can myself having a lot of fun AND keeping my license this season

Had a closer look at the engine too & "Suzuki Japan" is in relief at the base of the front cylinder

It's a Suzuki VX800 redone by Sachs of Austria.

I think the VX800 was the first suzuki to use the 805cc engine (bored out intruder 750 lump), then other models subsequently adopted it '91 onwards

Are there many VX800 owners on here?

adilmon wrote:

I think the VX800 was the first suzuki to use the 805cc engine (bored out intruder 750 lump), then other models subsequently adopted it '91 onwards

Although the engine boasts an identical 83.0 x 74.4mm bore and stroke, when Suzuki released of the Volusia in 2001 they pumped up the power plant's
torque and low rpm power. Other changes were also made to the engine.

Interesting. I've booked her on a dyno this weekend...

I wonder what the small chome pipe near the exhaust header is for?

MCN have them (Bog standard) at 57bhp (others at 58bhp) with 52lb ft.

What modifications have you done to it to warrant paying out for a Dyno?

There's a slight popping when shutting the throttle quickly, so i'd like to see if she is running rich (maybe previous owner tinkered with jets). Also, the dyno I've booked is having a free dyno day Saturday
http://www.cmwmotorcycles.com/contact.html

Happy days on the Dyno then, that great
I hate it when people mess with carbs when they don't know what they are doing but these bikes do pop and burble a little on deceleration! So hopefully alls good.

Don't expect too much from the Dyno - these bikes are factory tuned for mid-range torque. Here is the rear wheel dyno graph for a M50 from MCN (Motorcycle Consumer News):

Ah now that all adds up with why I change gear on the run at about 6500 rpm

Righto. Dyno says 43.05 Ft/lb at 4128 rpm & 37.17 bhp at 6484rpm.

I asked why he didn't take the revs all the way to 7500 & the fella at the garage told me there a was a little clutch slippage that prevented getting true figures at max throttle. I checked my paperwork & the recent oil change was semi-synth oil, instead of regular SG mineral oil. So time to tinker...

I'll upload a the dyno graph soon

Thats a real shame especially when the dyno was free. The semi synthetic oil will not make a clutch slip any more than any oil. the only real criterea is that it is an oil suitable for a wet clutch. you can not use an oil that has the following stamp



The oil must be "JASO-MA standard"

the results were not what you were hopeing for i take it is the bike standard . Interesting though if you fix the clutch slipping then book it in agian and get an accurate dyno reading then tamper with bike to make it better at laest youl know if your tampering has worked if dynoed a third time good luk and let us know how it goes if you do it . was thinking of getting mine done as a mate of mine said theres a place not to far from were i live that do it for free on sertain days if you can get a space

I've been reading up on oils:
-owners manual says mineral oil, that's fine
-same manual says SG or higher, which is a bit of an issue, since later environmental concerns have lowered the Zinc based anti wear additives & replaced them with things like molybendium & PTFE, which dont work well with wet clutches
-JASO rating is an excellent standard, since it's the only one that has a HTHS (high temperature high stress) minimum performance criteria.

I've not noticed the clutch slipping on the road because torque is plentiful & I'm kinder to the throttle than a dyno operator. If the dino juice doesn't sort it, I'm happy to replace the clutch plates & renew the springs

So, Here's the base line dyno

Here's a scaled comparison with the MCN dyno:

Righto, got the oil (Castrol Act->evo) which is mineral 10w40 SG, JASO MA2 ready to change it tomorrow. Today I took care of the valve clearance check & thankfully none needed adjusting (0.08-0.13mm in&ex)

So, Bad News 1st
-oil change didn't make a huge difference to clutch slip
-discovered there's a relatively common issue with Intruder's clutch springs weakening/relaxing

Good News
-At least I now have dispelled the mineral/synthetic oil concerns. So long as it's 10w40, SG or later & JASO MA, then it doesn't matter. I'm tempted towards the syth, since I understand some of the engine's hypoid gears are tough on oil shearing
-I get to open her up & tinker. Will be able to confirm if she got the slipper clutch of the vx800, or regular clutch of other models
-EBC makes heavy duty spring kits & painlessly ordered the vs800 springs, clutch cover gasket & exhaust washer from www.wemoto.com
-I stumbled across the 12,000km Service bulletin to grease the drive shaft splines & final drive ring gear (suzuki super grease "A" is just regular Hi-temp bearing grease). Big tub of Lithium Moly grease in hand
-I'm thankful sorting this out is within my spannering ability & the only special tool is a torque wrench

(sorry I know I should've posted this on technical/service section, but figured there are so few people with this bike I keep it easy to find. I intend to post up in the proper sections from now on & just put links here)

So, reviving a long lost thread...
I still have the sachs, just brought the clutch spring and doing a light restoration as the rear shocks and some chrome bolts could look better. Also bought some tan material to recover the seat.


This site has been great for taking the hassle out of looking for kit
http://www.sachs-biker.de/ and they had a good recommendation

"The original Suzuki clutch springs of the Sachs Roadster 800 & Sachs b-805 are 35mm long; suitable for motors with a torque of 50-60 Nm. As a result, the Sachs Roadster 800 & Sachs b-805, with a torque of 70 Nm, will eventually slip-slip. The Sachs-Biker IG recommends alternative compression springs of the Suzuki GSX1100F (88-92) for clutch slipping in addition to the exclusive use of mineral oil; suitable for motors with a torque of 100 Nm. "
Apparently as of 2018 there are only 21 on the road in the uk from a peak of only 74. Hope to make that 22 as she's been off the road for a year or 2

Great to hear that you are near to be putting it back on the road! Also good to see that you are still in the group after all this time! Welcome back!!!

Many thanks. Just picked up some Hagon Nitro shocks and all the bits for a service. 
Will share a pic or 2 of the progress

Decided to put all the snippets of info I've gathered for this model onto it's own page

here

https://www.suzuki800.com/t7157-sachs-roadster-800-b-805-service-manual-and-alternative-parts-info#150944

Sachs Roadster 800 real review/rant 10 years later;

Got a bit annoyed at reading old reviews on MCN and Bennetts and others on the Sachs Roadster 800.
The truth is, they're partially right. They seem to agree that;
1) the sachs roadster 800 VS800 intruder engine, tuned to 58hp doesn't suit the agile handling of the bike.
2) The styling is a mix of retro and modern and found that confusing

It doesn't make sense that the 54hp of the 2016+ triumph street twin is described as  "[url=https://www.motorcyclenews.com/bike-reviews/triumph/street-twin/2016/]That’s more than enough for mischief on a naked retro.[/url].", unless...


1) the sachs roadster 800 was ahead of it's time or the fashion. Back in 2003 people were eagerly awaiting the latest R1, CBR954 etc and 600s were still alive and well. Less beards, avocado on toast cafe racers and Cx500s were still dirt cheap. 

2) Styling, yes admittedly twin 320mm discs on 17" wheels (for sticky rubber) could be seen a writing a cheque for performance that the Sachs could not cash, but the rear tyre is still only 160/60. 

Overall, I feel, if the sachs roadster 800 was released today, the power and styling wouldn't have been criticised as much.

Basically, if you want to race, don't bother. Here's my scores to update the reviews the internet is storing for all time;

1) handling. 8/10 
Great. Ideal for people with longer arms though. Little effort to get it on it's side and decent 45 degrees before pegs start grinding. Suspension is up to the job unless you're pushing like a 600cc would take. Huge selection of 17 tyres availble, from K73 sumo tyres, to metzeler white walls. Take your pick with what style you desire
2) brakes 9/10. 
Huge pair 320mm discs with great feel. The OEM discs aren't available but EBC and France Equipment make aftermarket ones. 
3) Suspension 7/10. 
Perfect for the job, and can upgrade easily if needed
4) comfort 8/10
relaxed, but not cruiser position. Huge seat. Add a small screen and you'll be comfy until the next fuel stop.
5)Practicality 6/10.
Would be less if accessories couldn't be easily bought and bolted on. Underseat storage need the wingnut in the (dirty) rear wheel arch to be undone and then there's not much room neat the battery
6)maintenance and running costs 9/10
Good MPG. Liquid cooled (no worries in traffic). Shaft Drive (no messy costly chain). Screw & locknut valve clearance (do it yourself, no shims to buy). Proven and reliable suzuki Vs800 engine (all spares cheap and available). Low insurance cost. Has traditional carbs, not fuel injection
7) engine 8/10
Suits it's purpose, to have fun on the roads and relax on the longer trips. Yes, the SV650 is faster. Yes the VFR800 is a better all-rounder, but they look like a transformer's haemorrhoids when naked. You can break the speed limit, sit at highway speeds all day long and your license will be safer. If you want to do squid overtakes in an instant from (50-70mph), then this wont suit you. Many reviewers speculated that Sachs chose the Vs800 engine to save money, but if you look at alternatives, the aesthetically pleasing ones have less power and the more powerful ones don't look good naked.

In short, you have to know what you want from a bike in order to find one that suits your build, type of riding, wallet, level of mechanical expertise. Reviews talk about what everyone would like, but nobody is everyone. If you're like me, weekend joyrides/fair weather commute, coming off sportsbikes to save you license (and life longer), but cruisers low ground clearance, relaxed handling and softer brakes put you off, then the Sachs Roadster 800 is worth a look. If you also want something different, reliable, with spares readily available, then it's 10/10.  

The only other alternatives are the VX800, bmw r850r and Honda NT700v Deauville, which have fallen from the ugly tree, hitting every branch on the way down. Slightly more powerful alternatives include the BMW R1100s, Yamaha Bt1100 bulldog and Honda VF700C super magna


Quick note, the price of the Sachs Roadster 800s (and Sachs B-805) have been rising, with only around 30 examples on the UK roads in 2019. You'll be pretty lucky to see another at a biker cafe

The color looks good and atypically 

Finally made most of the changes;
Engine- Fresh Clutch, GSX1000 springs, Carbs Tuned, iriduim plugs, motobatt high CCA battery
Chassis-  B805 fork spring mod, Honda Valkyrie F6C Hagon Nitro shocks, Shin Yo 7" clear headlight (LED), Shin Yo cat eye indicators, heated grips and Btwin mirrors
Wheels- Heidenau k73 tyres, Brembo P4 calipers, EBC Prolite Discs
Bodywork- Spare set fitted, repainted to Porsche Dark Olive Metallic, seat recovered, homemade stainless steel tail tidy.

A lot of unseen stuff was done too, all fluids and filters, fresh headset bearings, new old stock top yoke fitted, fork seals, hex bolts and acorn nut caps and full set of fresh cables.

Took her on the DGR in London last month. The fan came on quite frequently after the mod to fit lower temperature radiator switch which worked well. Several oil cooled triumphs had to pause on the slow charity ride to cool down. No more mods planned, just ride :)

That's really nice.